package thread;

public class SyncDemo1 {
    static boolean success1 = false;
    static boolean success2 = false;

    public static void main(String[] args) throws InterruptedException {
        Bank bank = new Bank();
        int sum = 0;
        while (true){
            sum++;
            Thread t1 = new Thread(){
                @Override
                public void run() {
                    success1 = bank.getMoney(20000);
                }
            };
            Thread t2 = new Thread(){
                @Override
                public void run() {
                    success2 = bank.getMoney(20000);
                }
            };
            t1.start();
            t2.start();

            Thread.sleep(10);
            if (success1 && success2){
                System.out.println("卡bug成功！俩人取钱成功,共测试："+sum+"次");
               break;
            }else {
                success1 = false;
                success2 = false;
                bank.saveAccount(20000);
                System.out.println("一个人取钱成功");
            }
       }

        }
    }


class Bank{
    private int account = 20000;
    public synchronized boolean getMoney(int money){
        int account = getAccount();
        if (account>=money){
            account = account-money;

            Thread.yield();

            saveAccount(account);
            return true;
        }
        return false;
    }
    public void saveAccount(int account){
        this.account = account;
    }
    public int getAccount(){
        return account;
    }
}